Product Summary

There is a wide variety of fittings and couplings that come into play. One of the more useful and versatile of these is the seat ring. A seat ring is a unique type of fitting used to connect tubing. These rings are used in fluid and gas applications.

seat rings are manufactured from various materials, including brass, copper, plastic and cast iron. The most common seat rings are made of brass. They also are available in a variety of shapes and sizes. The size of a seat ring is determined by the outside diameter of the tube or pipe it holds.

There are two types of seat rings. Type A, referred to as non-manipulative, is used in fluid plumbing systems. Type B, known as a manipulative fitting, is found in gas applications.

A seat ring works by using clamping force to seal the fitting. The unit consists of a seat ring, a compression ring and a seat. The compression ring, often called a ferrule, is placed on the tubing with the nut behind it. The tubing is then inserted into the seat, and the nut is screwed onto the seat. As the nut is tightened, it compresses the ring around the tubing, creating a leak-free seal.